Sumitomo Mitsui Trust Group’s Iron Mountain IRM Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$113M Sell
896,560
-37,162
-4% -$4.56M 0.06% 271
2026
Q1
$95.4M Buy
933,722
+26,834
+3% +$2.67M 0.06% 285
2025
Q4
$75.2M Sell
906,888
-27,864
-3% -$2.61M 0.04% 354
2025
Q3
$95.3M Buy
934,752
+10,338
+1% +$996K 0.05% 308
2025
Q2
$94.8M Sell
924,414
-122,702
-12% -$11.6M 0.06% 308
2025
Q1
$90.1M Buy
1,047,116
+136,393
+15% +$13.1M 0.06% 295
2024
Q4
$95.7M Buy
910,723
+10,160
+1% +$1.19M 0.06% 289
2024
Q3
$107M Sell
900,563
-3,293
-0.4% -$352K 0.07% 258
2024
Q2
$81M Sell
903,856
-52,333
-5% -$4.24M 0.06% 315
2024
Q1
$76.7M Sell
956,189
-7,170
-0.7% -$519K 0.05% 373
2023
Q4
$67.4M Buy
963,359
+12,656
+1% +$794K 0.05% 389
2023
Q3
$56.5M Sell
950,703
-12,613
-1% -$771K 0.05% 409
2023
Q2
$54.7M Sell
963,316
-101,077
-9% -$5.53M 0.04% 444
2023
Q1
$56.3M Sell
1,064,393
-395,926
-27% -$20.7M 0.04% 461
2022
Q4
$72.8M Sell
1,460,319
-253,884
-15% -$12.8M 0.06% 382
2022
Q3
$75.4M Sell
1,714,203
-104,253
-6% -$5.26M 0.06% 360
2022
Q2
$88.5M Buy
1,818,456
+449,724
+33% +$23.7M 0.07% 325
2022
Q1
$75.8M Buy
1,368,732
+26,641
+2% +$1.27M 0.05% 401
2021
Q4
$70.2M Buy
1,342,091
+188,979
+16% +$8.93M 0.04% 447
2021
Q3
$50.1M Sell
1,153,112
-47,993
-4% -$2.16M 0.03% 550
2021
Q2
$50.8M Sell
1,201,105
-106,739
-8% -$4.48M 0.03% 551
2021
Q1
$48.4M Sell
1,307,844
-60,232
-4% -$2.01M 0.03% 555
2020
Q4
$40.3M Sell
1,368,076
-200,424
-13% -$5.56M 0.03% 590
2020
Q3
$42M Sell
1,568,500
-116,295
-7% -$3.31M 0.03% 537
2020
Q2
$44M Buy
1,684,795
+30,428
+2% +$768K 0.03% 529
2020
Q1
$39.4M Buy
1,654,367
+144,417
+10% +$4.37M 0.03% 506
2019
Q4
$48.1M Buy
1,509,950
+189,552
+14% +$6.21M 0.04% 498
2019
Q3
$42.8M Buy
1,320,398
+72,146
+6% +$2.27M 0.04% 490
2019
Q2
$39.1M Buy
1,248,252
+138,426
+12% +$4.54M 0.03% 513
2019
Q1
$39.4M Sell
1,109,826
-103,190
-9% -$3.65M 0.04% 488
2018
Q4
$39.3M Buy
1,213,016
+104,791
+9% +$3.44M 0.04% 460
2018
Q3
$38.3M Buy
1,108,225
+34,538
+3% +$1.23M 0.04% 464
2018
Q2
$37.6M Buy
1,073,687
+146,247
+16% +$4.94M 0.04% 451
2018
Q1
$30.5M Buy
927,440
+12,236
+1% +$412K 0.04% 488
2017
Q4
$34.5M Buy
915,204
+33,394
+4% +$1.33M 0.04% 448
2017
Q3
$34.3M Buy
881,810
+7,688
+0.9% +$287K 0.05% 417
2017
Q2
$30M Buy
874,122
+6,978
+0.8% +$244K 0.04% 452
2017
Q1
$30.9M Sell
867,144
-28,305
-3% -$1M 0.05% 426
2016
Q4
$29.1M Buy
895,449
+60,941
+7% +$2.03M 0.05% 432
2016
Q3
$31.3M Buy
834,508
+19,071
+2% +$736K 0.05% 416
2016
Q2
$32.5M Buy
815,437
+145,464
+22% +$5.29M 0.06% 381
2016
Q1
$22.7M Buy
669,973
+28,899
+5% +$830K 0.04% 496
2015
Q4
$17.7M Sell
641,074
-27,408
-4% -$804K 0.03% 555
2015
Q3
$20.7M Buy
668,482
+17,169
+3% +$512K 0.04% 494
2015
Q2
$20.2M Buy
651,313
+80,321
+14% +$2.81M 0.04% 537
2015
Q1
$20.8M Buy
+570,992
New +$22M 0.04% 530
2014
Q4
Sell
-471,028
Closed -$15.4M 886
2014
Q3
$15.4M Buy
471,028
+99,951
+27% +$3.24M 0.03% 563
2014
Q2
$12.2M Sell
371,077
-4,391
-1% -$119K 0.03% 591
2014
Q1
$9.57M Sell
375,468
-6,903
-2% -$177K 0.02% 611
2013
Q4
$10.8M Sell
382,371
-30,025
-7% -$769K 0.02% 607
2013
Q3
$10.3M Sell
412,396
-808
-0.2% -$20.5K 0.02% 601
2013
Q2
$10.2M Buy
+413,204
New +$13.3M 0.02% 594

Other funds holding IRM

Sumitomo Mitsui Trust Group's IRM Position: Q2 2026 in Review

Sumitomo Mitsui Trust Group reduced its Iron Mountain (IRM) stake by 4% in Q2 2026, selling an estimated $4.56M and leaving 896,560 shares worth $113M. The position accounts for 0.06% of the portfolio, ranked #271.

Sumitomo Mitsui Trust Group first reported a position in IRM in Q2 2013 and has held it in 52 quarters since. 1,170 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Sumitomo Mitsui Trust Group held 896,560 shares of Iron Mountain worth $113M as of Q2 2026.
  • Sumitomo Mitsui Trust Group sold 37,162 Iron Mountain shares in Q2 2026, an estimated $4.56M.
  • Iron Mountain made up 0.06% of Sumitomo Mitsui Trust Group's portfolio in Q2 2026, its #271 holding.
  • Sumitomo Mitsui Trust Group first reported a position in Iron Mountain in Q2 2013 and has held it in 52 quarters since.
  • 1,170 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Sumitomo Mitsui Trust Group's 13F filing for Q2 2026, filed 30 Jul 2026.